Tsunami waves can be distinguished from ordinary ocean waves by many factors, including the tremendous amount of energy they carry, the great distance between their wave crests, and their capacity to travel at jetliner speeds across an entire ocean. In this interactive from NOVA, explore how the 2004 Indian Ocean tsunami — the deadliest in recorded history — was triggered, how its waves traveled thousands of kilometers largely unchanged, and what happened once the waves reached coastlines both near and far from their source.
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